Exclusive agent for the distribution of Zehntner Road Equipment in Iran:

Company: SEHAT RAH DELTA
Director: HOSSEIN KHALILI
Tel.: 0098 21 880 521 81
Mobile: 0098 91 235 780 22
Address: IRAN – TEHRAN, SHAHRAK GHARB NO 5
E-Mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Gloss

Gloss is an opti­cal pro­per­ty of a sur­face, cha­racter­ized by its ability to re­flect light. If a light beam strikes a sur­face - e.g. a lacquer - with a cer­tain angle of inci­dence (ε), most of it will pene­trate the layer of paint, the rest will be re­flec­ted.
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Laboratory

Zehntner offers a wide and conti­nu­ously ex­pand­ed pro­duct range of physi­cal measuring and test­ing equip­ment for different areas such as appli­cation, fine­ness of grind, drying pro­per­ties, film thick­ness, adhesion and flexi­bili­ty, hard­ness, corrosion, visco­sity etc. In addition to the famous Swiss preci­sion, Zehntner focuses first and fore­most on easy, fast and safe operation.
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Road

The night and day visi­bili­ty of road mark­ings have an influ­ence on the road safety. Hence it is inevit­able that road mark­ings are checked, main­tained and if necessary re­placed. The Zehntner de­vices are a reli­able and import­ant basis for deci­sion-making.
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Adhesion

The adhesion of a coating on a substrate is crucial for the mechanical performance as well as for the corrosion protection.

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Application

Constant and defined film thicknesses are the precondition for testing and analysis of coating materials and coatings.

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Chalking

The degree of chalking, a measure for the amount of particles exposed by chalking, is determined by the reduction in the intensity of light passing through the adhesive tape after having applied to the coating.

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Corrosion

Many standards describe corrosion tests where a coating has to be prepared with scratch marks that penetrate it completely down to the metal substrate.

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Cross-cut

The cross-cut test is a very rapid and simple method for the assessment of single and multi-coat systems.

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Day visibility

Measures the luminance coefficient under diffuse illumination (day visibility) of road markings.

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Density

The density is an essential quality characteristic, for example it allows recognising errors regarding the composition and gives indications of the purity of a product.

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Drying properties

Drying properties, shrinking, mud-crack, cracking and porosity are important characteristics which should be tested during the manufacture of coating materials and fillers.

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Film thickness

For cost and quality reasons the determination of both, the wet and dry thickness has become more important during the last years.

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Fineness

The fineness of grind is particularly important during the manufacture of pigmented products.

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Flexibility

Flexibility / elongation is the pliability or rigidity of a material. It expresses the extent to which it resists bending.

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Gloss

Gloss is an opti­cal pro­per­ty of a sur­face, cha­racter­ized by its ability to re­flect light.

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Hardness

Hardness testing is an easy and fast method to determine the force needed to scratch a surface.

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Night visibility RL

The nicht visibility measures the coefficient of retroreflected luminance (night visibility) of road markings.

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Retroreflection

The visibility is an important factor for many road signs, road markings, traffic signs, road studs as well as high-visibility material such as warning clothes and Heavy good vehicles (HGV's) contour safety marking.

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Road marking

The visibility of road markings is a cru­cial fac­tor in ensur­ing traffic safety. Hence it is inevit­able that road mark­ings are checked, main­tained and if neces­sary re­placed on a regular basis.

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Roughness

The roughness of a surface can be defined by it's macro texture.

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Skid resistance

This test is valid for flat road markings and road markings with low degree of texture.

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Software

Zehntner develops their own software for meeting and exceeding customer requirements.

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Viscosity

An important property of liquids is their viscosity.

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The adhesion of a coating on a substrate is crucial for the mechanical performance as well as for the corrosion protection. In practice, there are several test procedures for determining the adhesion such as cross-cut test, mandrel test and impact test.

Cross-cut test

The cross-cut test is a very rapid and simple method for the assessment of single and multi-coat systems. Here, cuts in a 30° angle (method A) or right-angle (method B) are executed so that you receive a lattice pattern or an X-shape. These test methods can be used as quick pass/fail tests. When applied to a multi-coat system, assessment of the adhesion of individual layers of the coating among each other may be carried out.

Bend test

Mandrel testers are common test apparatuses used for the determination of the elongation/and adhesion of coatings at bending stress. At a bend test a test panel is bend over a certain radius.

Conical mandrel testers bend the test panels over a conus so that a large variety of bending radii is tested at the same time.

The cylindrical mandrel test can be carried out as a quick pass/fail test with a single mandrel of specified diameter or as repeated procedure with decreasing mandrel diameters for determining the diameter of the first mandrel causing failure.

Impact test

Impact tests are a test method for evaluating the resistance of a dry film of paint, varnish or related product to cracking or peeling from a substrate when it is subjected to a deformation caused by a falling weight dropped under standard conditions.

 

Zehntner GmbH Testing Instruments - The Swiss manufacturer of precision measuring and testing instruments for the quality control of all types of surfaces.

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Gloss

Gloss is the opti­cal proper­ty of a sur­face to reflect light into the specu­lar direction, an important appear­ance factor. The visual impres­sion of gloss is depen­dent on the individual per­ception, there­fore the gloss values are deter­mined using gloss­meters. Zehntner is the leading manu­facturer of top class gloss­meters.

Laboratory

The growth of techno­logy in­creases contin­uously the require­ments on physical proper­ties of coating materials, adhesives and similar products.
Zehntner offers a wide pro­duct range of measur­ing and testing equip­ment for the quali­ty con­trol for various appli­cation areas and in many industries.

Road

The visibility of road markings is a cru­cial fac­tor in ensur­ing traffic safety. Hence it is inevit­able that road mark­ings are checked, main­tained and if neces­sary re­placed on a regular basis.

Zehntner devices offer a reli­able and impor­tant basis for decision-making.